(北京有色金属研究总院，北京100088)
摘 要: 具有六方结构的金属板材呈现较强的物理和力学性能各向异性，尤其是钛及其合金呈现的弹性各向异性，其轧向与横向的弹性模量差异较大。根据Bunge等人的三维取向分布函数(ODF)，由单晶弹性系数和少量有限的织构系数如直至四阶的C系数，简便地计算了低对称六方结构的板材的弹性。钛及其合金板材弹性的理论计算结果与实测数值相吻合，钛合金板材的弹性各向异性是由织构产生的，具有{12(-1)5}<10(-1)0> 织构的钛板材的横向弹性模量为116GPa，大于轧向的弹性模量(108GPa)。
关键字: 六方金属板材；弹性；织构；极图；ODF
（General Research Institute for Nonferrous Metals, Beijing 100088 , P.R.China）
Abstract:The presence of texture was known to cause anisotropy of elastic properties of polycrystalline materials with a hexagonal structure. By using texture coefficients and elastic constant of single crystal, the elastic property of polycrystalline plate can be calculated. The present calculation method has been applied to predicting elastic modulus for a rolled titanium sheet and the results are consistent well with experimental ones.
Key words: hexagonal metallic plate; elasticity; texture; pole figure; ODFs
